photosystem II
Photosynthesis, Quantum Yield of Photosystem II and Membrane Leakage as Affected by High Temperatures in Cotton Genotypes
... With global warming and climate change, high-temperature stress has become a major factor affecting crop growth and yield. cot- ton (Gossypium hirsutum l.) crops in the united states experience periods of extreme high ...
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A miniature bioassay for testing the acute phytotoxicity of Photosystem II herbicides on seagrass
... The degradation of water quality factors in the dramatic decline of seagrass meadows around the globe [1]. One of the best-studied examples is the Great Barrier Reef (GBR) which experi- ences heavy rainfall over the ...
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Investigating the photoprotective role of cytochrome b-559 in photosystem II in a mutant with altered ligation of the haem
... The photosystem II (PSII) complex found in all oxygen-evolving photosynthetic organisms functions as a water-plastoquinone oxidoreductase, using light energy to catalyze water splitting and to initiate an ...
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Acute and additive toxicity of ten photosystem-II herbicides to seagrass
... Photosystem II herbicides are transported to inshore marine waters, including those of the Great Barrier Reef, and are usually detected in complex ...
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Photosystem II of barley seedlings under cadmium and lead stress
... Chlorophyll a fluorescence measurements were carried out on two barley (Hordeum vulgare L.) cultivars Arabi Abiad and Arabi Aswad at 8 and 14 days after emergence to identify their early tolerance mechanism for heavy ...
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The study of the multi-line-signal s 2 state of the oxygen evolving complex of the photosystem-ii.
... interact. Photosystem II contains the water oxidizing complex (WOC), which utilizes the interaction of four manganese ions and calcium ion (Mn 4 /Ca catalytic ...
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Dependence of substrate-water binding on protein and inorganic cofactors of photosystem II
... membrane preparations that are enriched in photosystem II activity and are routinely used to evaluate cofactor requirements. Consistent with the previous determinations of the 18 O exchange behavior in ...
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Different Effects of Malate on the Activities of Photosystem II in Detached Leaves of Maize and Tobacco
... of photosystem II (PS II) is normal, but the activity of ribulose bisphosphate carboxylase/oxygenase (Rubisco) is ...PS II is lower but the activity of Rubisco is higher ...
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Combined effects of temperature and the herbicide diuron on Photosystem II activity of the tropical seagrass Halophila ovalis
... Interactive effects of simultaneous temperature and diuron exposure on photosystem II. The combined effects of temperature and diuron in 36 combinations over 24 h on the performance of PSII in H. ovalis was ...
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Bio Inspired Homometallic and Heterometallic Clusters Relevant to the Oxygen Evolving Complex of Photosystem II
... 1.1 Introduction. The four-electron, four-proton oxidation of water to dioxygen, catalyzed by the oxygen-evolving complex (OEC) of photosystem II (PSII), presents an attractive alternative energy source to ...
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学位論文. Study of the photosystem II photoinhibition: Analyses of repair processes
... Light is indispensable to plants as energy source for photosynthesis. However, strong light inhibits photosynthesis. This phenomenon is called photoinhibtion. Kok (1956), the pioneer of photoinhibition studies, defined ...
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Photosystem II breakdown induced by reactive oxygen species in freshly-isolated Symbiodinium from Montipora (Scleractinia; Acroporidae)
... photosystem II (PSII) in Symbiodinium in hospite and after isolation in seawater. FIS from Montipora spp. exhibited rapid and dramatic decreases (by up to > 95%) in PSII activity within 30 min of isola- ...
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Studies of the oxygen-evolving complex of photosystem II
... Nature of the s2 state electron paramagnetic resonance signals from the oxygen evolving complex of photosystem II: Q-band and oriented X-band studies.. Evidence for two forms of the g=4.[r] ...
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Models of the Oxygen Evolving Complex of Photosystem II
... In the five chapters that follow, I delineate my efforts over the last five years to synthesize structurally and chemically relevant models of the Oxygen Evolving Complex (OEC) of Photosystem II. The OEC is ...
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Phytotoxicity of four photosystem II herbicides to tropical seagrasses
... Coastal waters of the Great Barrier Reef (GBR) are contaminated with agricultural pesticides, including the photosystem II (PSII) herbicides which are the most frequently detected at the highest ...
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CHARACTERIZATION OF PHOTOSYSTEM II HETEROGENIETY IN RESPONSE TO SALINITY STRESS
... photosystems: Photosystem II and I. Photosystem II (PSII) is a multisubunit pigment protein complex embedded in the thylakoid membrane of the ...PS II consist of at least 25 different ...
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Electronic Structure and Spectroscopy of Tetranuclear Mn4O4 and CaMn3O4 Complexes as Models of the Oxygen Evolving Complex in Photosystem II
... Microsoft Word HBL thesis revised docx ? ? Electronic Structure and Spectroscopy of Tetranuclear Mn4O4 and CaMn3O4 Complexes as Models of the Oxygen Evolving Complex in Photosystem II Thesis by Heui B[.] ...
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Computational Investigation of the Oxygen Evolving Complex of Photosystem II and Related Models via Density Functional Theory
... Photosystem II (PSII) is a transmembrane holoenzyme (i.e. a supramo- lecular complex of multiple associated proteins) which transfixes the thylakoid membrane. The thylakoid (from Greek θύλακος, ‘sac’ + ...
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In vivo label-free mapping of the effect of a photosystem II inhibiting herbicide in plants using chlorophyll fluorescence lifetime
... PS II centres, which leads to an increased fluorescence lifetime of chlorophyll molecules in the vicinity of the corresponding herbicide binding sites, ...PS II [30] and light harvesting antenna ...
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Nanodomains of Cytochrome b(6)f and Photosystem II Complexes in Spinach Grana Thylakoid Membranes
... bacterium Rhodobacter sphaeroides (Cartron et al., 2014). The close proximity of cytochrome complexes and Type II (quinone acceptor) RCs, such as PSII, may therefore be advantageous for facilitating rapid exchange ...
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